GURPS Casey and Andy (2005) is based on Andy Weir's hilarious webcomic Casey & Andy, found on the Web at http://www.galactanet.com/comic/index.php. The title characters are 21st-century mad scientists dabbling in time and dimension travel, instantaneous cloning, and increasingly complex apocalyptic doomsday devices. Apart from that, they live in suburbia with their girlfriends, Mary and Satan. Yes, that Satan."